[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] phase coherence for N210 and SBX

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] phase coherence for N210 and SBX
Date: Thu, 23 Apr 2015 18:28:27 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0

On 04/23/2015 06:23 PM, Pengyu Zhang wrote:
Thanks for the inspiring tips. I did not use the WX GUI scope for checking the phase offset. Instead, I log the baseband signal received by each RX antenna. Then, I plot the IQ constellation of the received baseband for checking their phase offset.

Can you be a bit more specific when you say the "multi_usrp object" and the "timed commands"? Are there tutorials that I can follow step by step for using the two functions you mentioned? Your comments are very helpful :)

A source/sink block in Gnu Radio uses an underlying multi_usrp object, so all you have to do is configure your source block for two channels, with
  two devices, and use


In the device arguments.

Also, recent gr-uhd ( and newer at least) use timed commands, so phase-zeroing will happen after a tune automatically, without you having
  to do anything.

The top of the UHD manual is here:


The Doxygen docs are here:


The documents for gr-uhd are part of the Gnu Radio documentation:


reply via email to

[Prev in Thread] Current Thread [Next in Thread]